if (exported_name.empty()) {
    main_op.emitError("Empty exported names for main Function.");
    return {};
  }
  // Fill the SignatureDefData container.
  // We create vector of size 1 as TFLite now supports only 1 signatureDef.
  std::vector<SignatureDefData> result(1);
  for (int i = 0; i < input_names.size(); ++i) {
    result[0].inputs[sig_def_inputs[i]] = input_names[i].str();
  }